package exam;

class Bird {
	{System.out.println("b1 ");}
	public Bird() {System.out.println("b2 ");}
}

class Raptor extends Bird {
	static {System.out.println("r1 ");}
	public Raptor() {System.out.println("r2 ");}
	{System.out.println("r3 ");}
	static {System.out.println("r4 ");}
}

public class Hawk extends Raptor {
	public static void main(String[] args) {
		System.out.println("pre ");
		new Hawk();
		System.out.println("hawl ");
		
	}
}

